The type of people who use fake accounts are rarely the people who would win a lot of money and withdraw, they are small time gamblers who are trying to win a small amount or get the benefits of the competitions and bonuses etc etc. I feel like if you can actually get a proper fake account from a proper place then you can probably just defend it as well so I am not sure if that would be an issue.
What is the issue is that there is someone out there who has no idea his ID is used and he looks like he is gambling, he could get in trouble with law if he is caught doing it while he himself is not doing it at all. I know a person who had this problem, someone stole KYC information of an exchange and used his KYC information to gamble and he was put in jail for 2 nights and then had a court case, he provided his IP which did not match the IP of the gambler so he was let go, but it is still 2 nights in jail because of this. Fake KYC should be prevented no matter what, even if it doesn't hurt Roobet, it hurts others.
We wouldn't know, why do you think there is a KYC? So, that people with huge amount of illegal money do not turn it into just "I got it from crypto investment" because that would be illegal and would allow people to launder money very easily. So, if you do not have a proper type of KYC in place at casinos that means you could probably get some drug lord putting money under some guys name, then get that guy gamble here a few times, then just withdraw it to an exchange with KYC again and then withdraw that to bank account and turn it into cash, all the drug lord has to do is get crypto and put it under some innocent guys roobet account and they could make this work.
So if you have KYC then you can trace it, that way you would know where it came from and basically follow that to reach to drug lord. This is even with KYC, without KYC, drug lord would even do that himself and as long as you can't prove it is drug money then he can just say "it is crypto profit" and launder his drug money. This is just one example. KYC is important because of that reason.
